Method of bedding railroad sieepers without tamping



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METHOD OF BEDDING RAILROAD SLEEPERS WITHOUT TAMPING HALTER Filed July e. 1920 5 mL P WHY/anim r' Bavaria, Germany,

lnew and useful Improvements in h iethods 5 The carrying capacity Patented Oct. 7, 1924.

Hermann HAL'-n, OF'MUNCH, GERMANY.

METHOD or BEDDING RAILROAD srEErERs wrrnou'rV TAMPINQ/ Application filed yTulfgr 9, 19M). Serial No. 395,140.

(GRANTD Uiinnn THE rn'ovrsibns er THE ACT or MARCH s, 1921, 41, STAT. t., 131e.)

T 0 all whom it 'may ounem:

Be it known that l, HERMANN HALTER, a citizen of the Republic Germany, and residingl at Munich, Kaulbazehstrass'e 60a, have invented, certain of Bedding Railroad Sleepers Without Tamping (for which I have filed an vappli'- ation in Germany, June 17, 1918, Patent 37,062), of which the following is a specification. n 1 Y This invention `relates to a method of bedding railroad sleepers without tainping and its object is "to provide a 'stronger and more durable form of bed than that -obtained by packing ballast beneath the sleepers by tamping. This is accomplished by making the bed of reinforced concrete. The concrete is stamped layer after layer into the iron skeleton or grids until the last horizontal layer reaches the height of the vloo-ttoin surface of the sle`eper`swhich are then put into place without any further packing or tamping operations being Carried fout. o-f the material thus stamped into the grids is yinuc'h greater than that of a bed made by tainping. This elimination of the t'amping operations is eX- tremely important. y In paeking railway sleepers great difficulty i`s encountered. just at the points where theV tamping is most necessary i. e. at the rail joints. This w-i'k is only done well by workmen who have had a long eXperi'ence of lrailroad maintenance work and arepainstalting and willing.

But these qualifications are often missing and are hardly ever possessed b'y temporarily employed hands upon whom ythe work of railroad maintenance new often devolves. It can hardly be doubted Athat even where good workmen are Vavailable large sums have tobe 'spent yearly for tamping work by which the supporting properties of the bed are only`V increasedin a small degree but which involves splitting of the sleepers at their bottom edges that results in the narrowing of their resting surfaces and in the bed being 'mixed with chips and splinters, and uselessly shattered and pulverized.

In the cases of railway beds constructed by piling up horizontal layers of material according to the new process the parts of the bed located beneath the rail-joints can lperspective view that ner in which the sandwic'hing trough is also 'be maintainedwithout tamping. Tf for any reason it should be necessary to raise the bed, as to make up forsubsidence of the vground beneath, or to enable the sleepers to be newly a'dzed, this is done by lift'- ing the section of rail in lquestion by a few centimeters (preferably by means yof a rail lifting device), and by inserting a layer of concrete beneath the Alifted sleeper.

This process is illustrated in the 'drawing in which Fig. 1 is a cross section of a railroad with the right end of a sleeper slightly raised so las to permit of a layer of concrete being inserted beneath it. Fig. 2 shows a side view of ya section of railroad in which an end view of the trougliilike lcontrivance for sandwiching the concr'ete in beneath the ysleepers is 'shown beneath the second sleeper from the left, and Fig. i3 is illu-strates the manu'sed. f

Referring to the -drawing,`10 designates 'a road bed constructed according to the present invention and composed `of .packed layers 'of concrete. The V'road bed 10 is embedded therein near opp "site sides and preferably those portions where th'e rail joints are supported, with reinforcing gradings 11 'whi'eh as shown comprise 'spaced apart and crossed bars of iron, steel ofthe like adapted to receive therebetween the concrete of which thebedlO is composed. vThese grad` 11 'are firmly em' l ings or reinforcements bedded 'n the road bed and serve to h'o-ld the same from cracking and disintegration.

incident to the vibration and weight imposed upon the road bed at these points.

The road bed'1`0 is built up to the approximate surfaeelevel desired for supporting the4 ties 12, thevties maintaining the rails 1B the usual manner.

The read bed 10 may or more upper layers of the .relatively fine stone or particles tov provide a top parliing surface. lAfter the cementitious bed 10 is set the ties 1Q may be properly 'elevated and leveled by resorting to' the further method of this invention. Dur'ng the formation ofy the road ybed V1() the ties 12, if the trap is already laid, are removed or arranged to one side so that the work of' pouring the concrete and tamp-ing the same in the reinforcements 11 may proceed withbe formed with one i UJI out interference. llVhen it is desired to reset or adjust the ties 12 upon the road bed, the end ot a tie 12 is elevated such as by use. of a rail jack 11i of any suitable construction which is capable of lifting the adjacent rail 13 and the one or more adjacent ties connected thereto. `When the ties are elevated, as shown in the figures ol' the drawing, a top layer et concrete or the like may be laid in upon the road bed beneath the tie 12 by use of a. special pan or receptacle 15 such shown. The pan l5 is preferably made trom sheet metal bent up at its opposite sides to torni retaining lianges and With the flanges spaced apart a distance slightly greater than 'the 'width of the tie 12. The upturned flanges of the pan are also outturne-d at their upper edges to provide linger holds 16 by means of which the pan may be grasped in the hands and manipulated.

The concrete in plastic: condition is placed in the pan l5 and the latter is slipped in between the raised end ot the tie 12 and the top surface oit the road bed 1.0. The pan is moved in beneath the adjacent rail 13 to the desired extent and is then vibrated laterally, bringing the flanges lo alternately against the sides of the rail with s-ullic-ient torce to jar the pan 15 and thus cause the plastic concrete to move with in the panl rlhe pan is tilted up at its outer end as :tar as possible toward the under surface ot the tie 12 to thus incline the pan and cause the concrete to slide otl' ot the saine and be deposited on the upper surface ot the road bed l0. lWhile this shaking or vibrating operation is continued the pan is gradually drawn toward the end of the tie 12 so as to deposit the concrete in a substantially uniform layer beneath the tie and longitudinally thereof. The operation may be repeated as many times as is necessary to build up the adjacent side of the road bed for supporting the end of the t-ie 12 at. the desired height.

Of course the rail 13 is maintained elevated until this nevvlayer oi concrete, designated as 16 in F ig. 1, sets. By use ot this pian an even layer of concrete may thus be placed beneath the ties Without the necessity of camping in beneath the tie from the sides and ends thereotl which is found not to be satisfactory on account ci the lack ot uniformity of the layer incident to such tamping.

This laying in ot the layer ot concrete may be quickly `and easily done at any por tion or side ot the track Where it is necessary to rebed or reset the ties, and the layer 17 is uniform and may be applied in a relatively small space and with the expenditure of but little time. lt is also apparentthat one Workman may accomplish the resetting ol" the ties Without the exercise ot any extraordinary slill.

What is claimed is l. That method or" rebedding railroad sleepers which consists in elevatinjr` the sleeper and introducing beneath the elevated sleeper a pan open at opposite ends and with opstanding sides and containing a quantityv ot concrete in a. plastic state, and tiltingl said pan and vibrating the saine laterally to jar the pan against opposite sides of the sleeper and move the same longitudinally beneath the sleeper for depositing a top layer ot the sleeper.

That method of building road beds and setting ties which consists in laying layers et concrete with reinforcements near opposite sides of the road bed to the normal height to the bed, elevating the ends ot the ties., and introducing beneath the elevated ties a pan open at opposite ends and with upstanding sides and containing a quantity oit concrete in a plastic state1 and tilting said pan and vibrating the same laterally to Jar the pan agauist opposite sides ot the ties and moving the pan longitudinally beneath the ties tor depositing a. top layer et concrete on the road bed beneath the ties.

23. That method of rebedding railroad sleepers which consists in elevating the sleeper and introducing beneath the elevated sleeper a. flat pan of greater Width than the sleeper and having upstanding portions and containing a quantity oitl concrete in a plastic state, and tilting said p-an and vibrating the `saine laterally for jarring the pan against opposite sides ot the sleeper to de posit a top layer ot concrete on the road bed beneath the sleeper.

Ll. rllhat method ot rebedding railroad sleepers which consists in elevating the sleeper and introducing therebeneath a tlat pan open at opposite ends and having at opposite sides upstanding par-ts adapted to engage opposite sides of the sleeper, and tilting said pian and vibrating the same to j ar the pan against opposite sides of the sleeper and placingin said pan a. quantity ot' concrete in a plastic state adapted to be deposited upon the road bed beneath the sleeper.

ln testimony whereof l. alhx my signature in presence of two Witnesses.

'HERE/[ANN HALTER, l/Vitnesses ADAM RANOS, MATT GREPPENACE.

concrete on the road bed beneath 

